Using "borderless letter" doesn't work in Pages
I’m using Pages version 14.0 (7039.0.94) running on macOS 13.6.6 (22G630). I love Pages…it's so much more intuitive than MS Word, but I seem to have run into a bug that's frustrating me: I have a 5 page Word Processing document that has an 8½ × 11 image set to be a "Section Layout Object" (Arrange menu > Section Layouts > Move Object to Section Layout). I would like the image to print double-sided and all the way to the borders of the page. In File menu > Page Setup…, for Paper Size I choose US Letter, Borderless (this doesn't appear to stick: If I re-open the Page Setup dialog, the Page Size has gone back to plain US Letter not borderless).
I've tried exporting to PDF and then using Preview to print double-sided and borderless. Here the borderless works (but the print quality suffers significantly); borderless and double-sided doesn't work—double-sided refuses to work if I've chosen borderless printing. Interestingly, Preview doesn't have a Page Setup dialog, you set the page size within the Print dialog. I've considered printing pages 1, 3, 5 and then manually feeding those back through the printer to print pages 2 & 4, but the poor print quality (even on Best) is unacceptable.
I’m using a Canon TR7020a printer that's about a year old. (Not particularly thrilled with the printer, BTW.)
Sure enough, when I print the document, it doesn't print to the borders; there's an approximately ¼ unprinted border around the printed page. Is this a known bug? Are there any workarounds?
Thanks in advance for any help provided. I do appreciate the depth of knowledge that's available in this forum. (I worked at Apple for 13 years, first as an instructional designer [writing documentation at Claris, FileMaker, and finally on AppleWorks at the "mother ship" on Infinite Loop] and then as an interaction designer [the cognitive psychology side of interface design] back at FileMaker; my Apple knowledge is broad, but not deep in any one particular area.
iMac 21.5″ 4K, macOS 12.2